Question

2^x : 4 = 8

Answer 1

(8x4)=32 

phân tích 32 =2^5

Answer 2

\(2^x:4=8\)

\(\Rightarrow2^x:2^2=2^3\)

\(\Rightarrow x:2=3\)

\(\Rightarrow x=3\times2\)

\(\Rightarrow x=6\)

Answer 3

2^x : 4 = 8

2^x = 8 : 4

2^x = 2

=> 2^x = 2¹ 

x = 1

Answer 4

Nhầm:

2^x : 4 = 8

2^x = 8 x 4

2^x = 32

Ta thấy:

32 = 2⁶

=> 2^x = 2⁶

=> x = 6